A 1.8V 250mW COFDM Baseband Receiver for DVB-T/H Applications

摘要

The DVB-T/H standard has been recently developed to provide video broadcasting services for hand-held devices [1]. The power consumption of a DVB-T/H baseband receiver must be strictly controlled in order to achieve long battery life. In response to this challenge a low-power COFDM baseband receiver for DVB-T/H is presented. It is comprised of an OFDM demodulator and forward-error correction (FEC) blocks for complete signal synchronization, mobile channel equalization, and data demodulation and correction. In addition, multi-stage power management (PM) is also exploited to eliminate redundant transition and power dissipation of baseband modules. With an area-efficient 2D equalizer (EQ), the proposed design can overcome 70Hz Doppler frequency (DF) resulted from 150km/h speed in the highest data rate mode, i.e. 31.67Mb/s. With single-port 158KBytes (158KB) embedded SRAM, it consumes only 250m W in the highest data rate mode specified in the DVB-T/H standards.